Finding the Fourth Proportional to 80,046.78, 120,090.91 and 42,576.01

Step by Step Solution

1. Step 1: Write the proportion equation
   80,046.78 : 120,090.91 = 42,576.01 : x
2. Step 2: Convert to fraction form
   80,046.78/120,090.91 = 42,576.01/x
3. Step 3: Cross multiply
   80,046.78x = 120,090.91 × 42,576.01
4. Step 4: Simplify right side
   80,046.78x = 5,112,991,378.40
5. Step 5: Solve for x
   x = 5,112,991,378.40/80,046.78
6. Step 6: Final answer
   x = 63,875.04